TY - JOUR AU - David Hummer AU - G. Rybicki BT - The Astrophysical Journal DA - Jan-07-1968 DO - 10.1086/180231 PY - 1968 EP - L107 T2 - The Astrophysical Journal TI - Redshifted Line Profiles from Differentially Expanding Atmospheres UR - http://adsabs.harvard.edu/full/1968ApJ...153L.107H VL - 153 SN - 0004-637X ER -